An Azure Service Bus namespace acts as a container for messaging components. In an Azure Service Bus namespace, you can create multiple topics/subscription and queues, and use them at runtime to publish and subscribe to a message through custom applications or software. To create a Service Bus namespace, you can either use the Azure portal, the Azure CLI, Azure PowerShell, or an Azure Resource Manager (ARM) template with a continuous integration and deployment pipeline in place. To get started on this exercise, we will use the Azure portal to create an Azure Service Bus resource in our resource group.